A5054487862- Solid State Laser Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Laser Design and Applications
- Advanced Optical Network Technologies
- Advanced Photonic Communication Systems
- Laser-Matter Interactions and Applications
- Magneto-Optical Properties and Applications
- Surface Roughness and Optical Measurements
- Acoustic Wave Resonator Technologies
- Advanced MEMS and NEMS Technologies
- Advanced Fiber Laser Technologies
- Anorectal Disease Treatments and Outcomes
- Bluetooth and Wireless Communication Technologies
- Metallic Glasses and Amorphous Alloys
- Ocular and Laser Science Research
- Additive Manufacturing and 3D Printing Technologies
- Thin-Film Transistor Technologies
- Laser Material Processing Techniques
- Optical Network Technologies
- Laser-Plasma Interactions and Diagnostics
- Advanced Optical Sensing Technologies
- Semiconductor Quantum Structures and Devices
- Interactive and Immersive Displays
- Magnetic Properties and Applications
Imperial College London
1982-2012
Watford General Hospital
1978
A magnetostrictive fiber-optic sensor system employing a thin film of amorphous Fe80B20 alloy coated directly onto the fiber cladding is reported. novel detection to facilitate measurement dc magnetic fields described, and results presented show advantages alloys compared with nickel for sensing purposes.
The ultimate response of sensors employing the magnetostrictive properties metallic glasses depends on efficient transfer strain between system under investigation and transducer. In this paper effect magnetostriction applying bonding agents is studied using a model system, which takes account application to fiber-optic magnetometer. Measurements are presented dc M-H, λ-H, λ-M loops. Results for as-received stress-relieved samples compared, discussed in terms domain spin geometry specimens....
The salient design features of a version the Photochron II streak tube having an internal microchannel plate intensification stage are described. Experimental results presented to demonstrate that camera incorporating this image has temporal resolution ~1 ps it synchroscan mode operation and ~4 in single-shot operation.
Shape anisotropy, or the demagnetising effect, limits sensitivity achievable with optical fibre magnetometers. The optimum sensor geometry has minimum cross-section compatible efficient strain transfer. For a head multiple passes of magnetically sensitised fibre, there is limit to increase in as number increased.
A polyamide-type of commercial photopolymer was used to form a flexible gravure plate by exposure through standard half-tone positive. The range suitable exposures and resulting “etch” depths cell volumes were determined. Comparisons with theoretical model volume made. produce proofs whose densities plotted against the original. These results show that variable depth-variable area obtained use 65° shoulder inherent in polymer produces final print density comparable existing systems.
A novel 2–4 PSK differential demodulator based on a three-port SAW delay line is described. method for optimising the performance by tuning carrier frequency using DC output of outlined. The optimum was within 0.4 dB theory bit error ratio 10−3.